updated make_request to include info about passing a body (#265)

Author: jpan-box

README.rst

@@ -276,6 +276,19 @@ supported by the SDK. You can still use these endpoints by using the ``make_requ
 The ``Client`` class and Box objects have a ``get_url`` method. Pass it an endpoint
 to get the correct URL for use with that object and endpoint.
 
+For API calls which require a body, ``make_request()`` accepts ``**kwargs`` after ``method`` and ``url``.
+
+.. code-block:: python
+
+    # https://developer.box.com/reference#update-terms-of-service-user-status
+    # Updates a user's ToS status
+
+    # JSONify the body
+    body = json.dumps({"is_accepted":true})
+
+    # Pass body as "data" argument
+    client.make_request(method, url, data = body)
+
 Box Developer Edition
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